H31-161 Question #169: Real Exam Question with Answer & Explanation

Refer to the exhibit. As shown in the topology, RTB directly connects to RTC through the POS interface. To implement the TE function, RTB and RTC are configured as follows: Configuration of RTB: mpls lsr-id 2.2.2.2 mpls mpls te mpls rsvp-te mpls te cspf # isis 1 is-level level-2 cost-style compatible network-entity 00.2222.2222.2222.00 traffic-eng level-1-2 log-peer-change # interface Pos4/1/0 clock master link-protocol ppp ip address 22.33.22.33 255.255.0.0 isis enable 1 mpls mpls templs rsvp-te Configuration of RTC: # mpls lsr-id 3.3.3.3 mpls mpls te mpls rsvp-te mpls te cspf # isis 1 is-level level-2 cost-style wide network-entity 00.3333.3333.3333.00 traffic-eng level-1-2 log-peer-change # # interface Pos5/1/0 link-protocol ppp ip address 22.33.33.22 255.255.0.0 isis enable 1 mpls mpls te mpls rsvp-te When a neighbor relationship is set up between RTB and RTC and becomes robust, the following information can be found in the LSDB of RTB. Database information for IS-IS(1) -------------------------------- Level-2 Link State Database LSPID Seq Num Checksum Holdtime Length ATT/P/OL 2222.2222.2222.00-00* 0x00007191 0x6689 1190 239 0/0/0 SOURCE 2222.2222.2222.00 NLPID IPV4 AREA ADDR 00 INTF ADDR 22.33.22.33 NBR ID 3333.3333.3333.00 COST: 10 +NBR ID 3333.3333.3333.00 COST: 10 IP-Internal 22.33.0.0 255.255.0.0 COST: 10 +IP-Extended 22.33.0.0 255.255.0.0 COST: 10 Router ID 2.2.2.2 3333.3333.3333.00-00 0x0000001c 0x14a3 1184 188 0/0/0 SOURCE 3333.3333.3333.00 NLPID IPV4 AREA ADDR 00INTF ADDR 22.33.33.22 +NBR ID 2222.2222.2222.00 COST: 10 +IP-Extended 22.33.0.0 255.255.0.0 COST: 10 Router ID 3.3.3.3 Two records are generated for the same NBR ID, as shown in bold fonts. Which statement is true?